If changing the angle of a monitor to accomodate touch input was not ergonomically sound then the OSHA should be coming down on drafting tables.
The ideal set up for me would be a touch screen with a stylus and traditional keyboard. The screen would be at an adjustable angle of between 30 and 45 degrees directly in front of a standard pull out from under the monitor keyboard. My second and third monitors would be on adjustable arms that I could pull in or push back as needed. (I can dream. Can't I?) It's actually a similar configuration to what I have now (minus the touch and the drafting table style monitor).
I don't see this set up being harmful or ergonomically unsound.
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